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Application.Properties Property

Gets a collection of application-scope properties.

Namespace: System.Windows
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public IDictionary Properties { get; }
/** @property */
public IDictionary get_Properties ()

public function get Properties () : IDictionary

You cannot use this property in XAML.

Property Value

An IDictionary that contains the application-scope properties.

Application exposes a dictionary via Properties which you can use to store application-scope properties. This allows you to share state amongst all code in an AppDomain in a thread-safe fashion, without the need to write your own state code.

Properties stored in Properties must be converted to the appropriate type returned.

TheProperties property is thread-safe, and is available from any thread.

The following example shows how create and use an application-scope property using Properties.

<Application x:Class="CSharp.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    StartupUri="MainWindow.xaml"
    Startup="App_Startup"
    >
</Application>

using System;
using System.Windows;

namespace CSharp
{
    public partial class App : Application
    {
        void App_Startup(object sender, StartupEventArgs e)
        {
            // Parse command line arguments for "/SafeMode"
            this.Properties["SafeMode"] = false;
            for (int i = 0; i != e.Args.Length; ++i)
            {
                if (e.Args[i].ToLower() == "/safemode")
                {
                    this.Properties["SafeMode"] = true;
                    break;
                }
            }
        }
    }
}

<Window x:Class="CSharp.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Loaded="MainWindow_Loaded"
    >
  <Grid>

	...

  </Grid>
</Window>

using System;
using System.Windows;
using System.Windows.Controls;

namespace CSharp
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        void MainWindow_Loaded(object sender, EventArgs e)
        {
            // Check for safe mode
            if ((bool)Application.Current.Properties["SafeMode"] == true)
            {
                this.Title += " [SafeMode]";
            }
        }
    }
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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